156561065606 has 16 divisors (see below), whose sum is σ = 260390686608. Its totient is φ = 69997495200.

The previous prime is 156561065581. The next prime is 156561065621. The reversal of 156561065606 is 606560165651.

156561065606 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×156561065606² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58329905 + ... + 58332588.

It is an arithmetic number, because the mean of its divisors is an integer number (16274417913).

Almost surely, 2^156561065606 is an apocalyptic number.

156561065606 is a deficient number, since it is larger than the sum of its proper divisors (103829621002).

156561065606 is a wasteful number, since it uses less digits than its factorization.

156561065606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116662567.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 156561065606 in words is "one hundred fifty-six billion, five hundred sixty-one million, sixty-five thousand, six hundred six".